1. What the heck is a "Q"?
2. I stumbled across a program this morning that was obviously written by a very experienced programmer, and it's got me scratching my head.
There are 12 discrete outputs hard wired to a message display panel. They are labeled 1,2,4,8,16,32,64 etc. and they are being used. But yet when I open the output data table and click on usage, it shows them as ...... which is not being used. They don't show up in the ladder and I can't figure out how they are being turned on and off.
2. I stumbled across a program this morning that was obviously written by a very experienced programmer, and it's got me scratching my head.
There are 12 discrete outputs hard wired to a message display panel. They are labeled 1,2,4,8,16,32,64 etc. and they are being used. But yet when I open the output data table and click on usage, it shows them as ...... which is not being used. They don't show up in the ladder and I can't figure out how they are being turned on and off.